physics please HELP !

74,755 results, page 61
  1. Physics

    If you stood atop a ladder that was so tall that you were twice as far from Earth's center, how would your weight compare with its present value?
  2. Physics

    At the end of a race a runner decelerates from a velocity of 7.00 m/s at a rate of 0.500 m/s2. (a) How far does she travel in the next 14.0 s in meters?
  3. Physics

    What is the resonant frequency in an RLC circuit if R=5 , C=6, and L=12 mH, and V-115 V? (a) 593 (b) 41,400 (c) 1560 (d) 1793
  4. Physics

    In an experiment to explore the nature of the relationships between velocity, force, and acceleration, what important issues are being ignored?
  5. physics

    A 50kg person standing on both feet cover a surface about 13 cm x 12 cm. How much pressure is on the sole of their shoes?
  6. Physics

    In an experiment to explore the nature of the relationships between velocity, force, and acceleration, what important issues are being ignored?
  7. Physics

    In an experiment to explore the nature of the relationships between velocity, force, and acceleration, what important issues are being ignored?
  8. Physics

    How long does it take a plane, traveling at a speed of 170 m/s, to fly once around a circle whose radius is 3500 m?
  9. PHYSICS

    When the brake are applied to a moving car travelling 60km\hr it decelerate at uniform rate of 5m\s
  10. physics

    What is the magnitude of the displacement of a car that travels half a lap along a circle that has a radius of 170m ?
  11. physics

    A boy sledding down a hill accelerates at 2.00 m/s2. If he started from rest, in what distance would he reach a speed of 5.20 m/s?
  12. physics

    How much force is needed to accelerate a 125 kg block up a 35 degree include at 3.4 m/s2 if the coefficient of friction is 0.28?
  13. Physics

    Why is an ice cube at 0°C more effective in cooling soft drink than the same mass of water at0°C?
  14. Physics

    Where does it takes less time to boils eggs: in a pan of boiling water or in a pressure cooker?
  15. physics

    Determine the cubical expansion of a liquid of volume 20liters at 30°c and 20.35 liters at 100°c
  16. Physics

    Where does it takes less time to boils eggs: in a pan of boiling water or in a pressure cooker?
  17. physics

    if a todler is moving at 15m/s and covering a distance of 1900m. how much time does it take to cover this distnace?
  18. ap physics

    You measure the radius of a wheel to be 4.16 cm. If you multiply by 2 to get the diameter, should you write the result as 8 cm or as 8.32 cm? Justify your answer.
  19. Physics

    A ball thrown into the air lands 38 m away 2.4 s later. Find the direction and magnitude of the initial velocity.
  20. physics

    What is the magnitude of the momentum of a car weighing 1,555 N when it is moving at a speed of 23 m/s? Express your answer in kg m/s.
  21. Physical Science

    What are the noninvasive benefits of the medical technologies that rely on physics of elementary particles?
  22. physics

    An electric field of 630 V/m is desired between two parallel plates 15.9 mm apart. How large a voltage should be applied?
  23. Physics (fix)

    In a string and pulley problem, will friction increase or decrease the tension.can you please explain if you can?
  24. Physics

    If a current is flowing with a value of 5.9 A, how much electron charge passes any single point in 25 seconds? A) 1.9 x 1020 e
  25. physics

    A body of mass 10kg in air and 4kg in water calculate the volume and its density
  26. Mimi

    post your thinking, or what is confusing to you on your chem/physics questions. I am not much of an answer giver. I do critique well.
  27. physics

    is this right?if 5.0m/s^2=6.0m/s-0/1.2s a=fn/m 5.0m/s=15.0N/3kg show that the 5.0m/s^2 acceleration can result from a net force of 15N exerted on a 3.ok cart
  28. physics

    a plane travels 5.0 x 10^2 while being accelerated uniformly from rest at the rate of 5.0 m/s. what final velocity does it attain?
  29. Physics

    The formula is x = 1/2 at^2 and I have managed to fill in the variables as this. d = 1/2 9.81 m/s^2 1^2 I want to say that my answer is 4.905 but I'm unsure. Can someone check it?
  30. physics

    A ball of mass xg is release from a height of 20m . Calculate the time taken to fall to the ground.
  31. Physics

    a runner moving at a speed of 5.60 m/s rounds a curved track with a 60.0 m radius. what is the runners acceleration?
  32. Physics

    How long does it take T-Rex to reach its food 200m away assuming that he starts from rest and accelerates at 4.00 m/s2?
  33. physics

    Earth is approximately a sphere of radius 6.37 × 106 m. What are (a) its circumference, (b) its surface area, and (c) its volume? please help
  34. Physics

    If you pull a 10-kilogram cart along the ground for 5 meters using 2 Newtons of force,how high will it go before it stops?
  35. College Physics

    How much would you have to raise the temperature of a copper wire (originally at 20 ∘ C) to increase its resistance by 30% ?
  36. physics

    an athlete completes one round of circular track of radius R in 40 second what will be his displacement at end of 2minutes 20 second
  37. Physics

    Assuming the earth to be a uniform sphere of radius 6400 km and density 5.5g/c.c. find the value of g on the surface where G=6.67×10
  38. Physics

    What net external force is required to give a 30 kg suitcase an acceleration of 2.5 m/s2 to the right? Answer in units of N
  39. physics

    What is the gravitational force on a 20Kg satellite circling the earth (Re = 6.4 x 10^6 m, Me = 6 x 10^24Kg) with a period of 5hr?
  40. physics

    If a cart is initially travelling at 3.5 m/s, and has a mass of 200g, what is it's kinetic energy (LEAVE OUT units of J)?
  41. Physics

    a woman on a bridge 75 high sees a raft floating at a constant speed on the river below.
  42. physics

    calculate the maximum increase in photon wavelength that can occur during Compton Scattering. (answer in pm).
  43. physics

    "If you have an inductor that has an inductive reactance of 125 ohms, on a 60Hz frequency, what would be the inductance in henry's?"
  44. physics

    suppose a ball thrown downward with initial velocity 3 m/s instead of being dropped a)what then would be its position after 1s and 2s ? b)what would its speed be after 1 s and 2 s ?
  45. Physics

    What is the car's forward acceleration,at a speed of 30m/s,when the driving force on the wheels is 650N
  46. Physics

    torque to move a block of m=200kg for 10m at an angle of 25 degree with a speed of 20m/s.
  47. physics

    If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?
  48. physics

    A body immersed in liquid has an upthrust of 140N with a density of 12kg calculate the velocity
  49. physics

    WHAT IS THE REASON BEHIND THE JISKHA"S TEACHERS TO BE NOTHING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(except Writeacher and STEVE) ARE THEY DAFT OR NUISANCE!!!!!!!!!!!!!!!!!! ANSWWER Me QUICKLY !!!!!!!!!!!!!
  50. Physics

    A car travels in a straight line for 4 h at a constant speed of 63 km/h. What is its acceleration? Answer in units of m/s^2?
  51. Physics

    A child slides down a hill on a toboggan with an acceleration of 1.5 m/s squared. If she starts at rest, how far has she traveled in 1.0 s, 2.0 s, and 3.0 s?
  52. physics

    Find the field produced by a uniformly charged sheet carrying 93pC/cm2 .
  53. physics

    show that the acceleration is 7.5 m/s² for a ball that starts from rest and rolls down a ramp and gains a speed of 30 m/s in 4s
  54. physics

    A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 7.00 m/s?
  55. physics

    A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 7.00 m/s?
  56. Physics

    A boy sledding down a hill accelerates at 1.55 m/s2. If he started from rest, in what distance would he reach a speed of 6.90 m/s?
  57. physics

    Find the acceleration of the two blocks sliding down the incline in the figure below. (Take m1 = 1.1 kg and m2 = 1.8 kg. Indicate the direction with the sign of your answer
  58. Physics

    The hamiltonian shows you that the energy levels are purtered by the electric fields.The form of the matrix,you can see?
  59. physics

    The force of tension of a rope is 300N. If a man is 50 m above the ground, what is the longest time it could take him to get to the bottom?
  60. physics

    A stone of mass m kg is held h metres above the floor 50s.The workdone in joules over this period is
  61. physics/electrical circuits

    if there are eleven resistors of 33k ohms each in parallel, what is the total resistance?
  62. physics

    if the wheel on a car accelerates from rest at a constant rate of 1.5rev/s, how fast will it be turning after 3s.
  63. physics

    A car comes to rest uniform deceleration at the rate of 5.8 m/s2 for 14.3 seconds. What is distance did it travel during this time??
  64. physics

    An elevator weighting 2500 N ascends at a constant speed of 8 m/s. How much power must the motor supply to do this?
  65. AP Physics

    What is the potential energy of an electron and proton in a hydrogen atom if the distance between them is 5.3*10^-11? ANSWER k=9*10^9 Q=1.6*10^-19 q=1.6*10^19 Ue=? Ue=KQq/r Ue=-4.4*10^-18 j
  66. physics

    If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?
  67. physics

    If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?
  68. Physics

    A 1250 kg car travelling at 60.0 km/h comes to a sudden stop in 35 m. What is the coefficient of friction acting on the brakes?
  69. Physics

    What exerts the force obn a rocket in outer space to make it move forward?
  70. physics

    You throw a ball downward from a window at a speed of 2.7 m/s. How fast will it be moving when it hits the sidewalk 2.8 m below?
  71. Physics

    Find the magnitude and direction of the equilibrant force for these two concurrent forces: 13.5 N, E and 32.0 N, N. Pls HELP me answer this. Thank u very much.
  72. Physics

    "At what point between two masses of 20kg and 15kg located 1.0m apart, will the gravitational field strength equal zero?"
  73. Physics

    Two identical gliders slide toward each other on an air track. One moves at 2 m/s and the other at 1 m/s. If they stick together, the combination slides at? Why?
  74. PHYSICS

    A girl rows 10 km downstream in 2 h. Her return trip takes 4 h. How fast can she row in still water. in km/h?
  75. Physics

    Calculate how much energy is stored in a 17μF capacitor when it is charged to a potential difference of 200 V
  76. physics

    Strictly speaking, you weigh a tiny bit less when you are in the lobby of a massive skyscraper than you do at home. Why is this so?
  77. Physics

    Two protons, an infinite distance apart are brought together to a separation of 1 nm. What is the initial potential energy of the system?
  78. Physics

    In the Theory of Special Relativity, the momentum of a massless particle is equal to which of the following? A. m0c^2 B. E2c^2 C. E/c D. E/c^2
  79. Physics

    In the Theory of Special Relativity, the momentum of a massless particle is equal to which of the following? A. m0c^2 B. E2c^2 C. E/c D. E/c^2
  80. physics

    what is the shortest possible time in which a bacterium could travel a distanceof 8.4 cm across a petri dish at a constant speed of 3.5 mm/s
  81. Physics

    If the fundamental frequency of an 70 cm long guitar string is 470 Hz, what is the speed of the traveling waves?
  82. Physics

    A 2473 kg elephant is walking at 3 m/s on a flat surface. How much kinetic energy does he have? Answer in Joules
  83. Physics

    A 2473 kg elephant is walking at 3 m/s on a flat surface. How much kinetic energy does he have? Answer in Joules or J
  84. physics

    A force of 10N is used to lift 600-kg ball from the ground to the a height of 1.8m when it is let go. What is the speed of the bal when it is let go?
  85. physics PLEASE HELP ME

    a rubber ball is thrown downwards off a balcony. after it travels 55m it has a speed of 46.5m/s. what is the initial velocity
  86. physics

    A 8.2 kg object undergoes an acceleration of 2.5 m/s2. What is the magnitude of the resultant force acting on it? Answer in units of N
  87. Physics

    2point charges of 1mc & 4mcr places 0.15m apart find the null point between them..?
  88. Science: physics

    Why does the moon not require a push to keep it along its orbit around the earth? -I have to use Newton's first law of motion.
  89. college physics

    Is it possible for a frictional force to increase the mechanical energy of a system? If so, give examples.
  90. physics

    1. How much does it cost to operate a 75 W lamp continuously for 1 week if the power utility rate is 7/kWh?
  91. physics

    calculate the linear momentum of a truck with a mass of 13065kg that is traveling at 36m/s eastward.
  92. physics

    Which bug experienced the greatest accelera- tion? 1. Their acceleration is same. 2. Unable to determine. 3. the VW 4. the insect
  93. Physics

    If a car is going .197 meters per second, how long will it take to go 5 kilometers (assuming the ground is perfectly flat).
  94. physics

    a projectile launched speed of 31.1m/s at angle 71.2 degrees above horizontal fill in table time 0 vx m/s 10.0m/s vy 29.4m/s ax? ay?
  95. Physics

    A person is travelling 6 km (E) then 4 km (N) and finally 2 km (W). Calculate the average speed And velocity. Show your work
  96. College physics

    You have a collection of six 1.0 kilo ohm resistors. what is the smallest resistance you can make by combining them
  97. Physics

    An object is thrown vertically upward with a speed of 31.8 m/s. How long does it take to reach this highest altitude?
  98. physics

    Forces of 9.93 N and 1.23 N act at right angles on a reddish-green block of mass 3.02 kg. How much acceleration occurs?
  99. physics

    If you dropped the ball, cylinder and the ring at the same time from a height of 6.35 cm, in what order would the hit the ground?
  100. Physics

    Find the electric potential at the centre of the square of side 1m at the four corners of charges of q1, q2,q3,and q4 are placed having values 3×10^-8C,-3×10^-8C,-5×10^-8C and 6×10^-8C respectively.